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heater problem


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gasman852
Novice

Mar 18, 2009, 4:09 PM

Post #1 of 2 (1484 views)
heater problem Sign In

1993 ford ranger 4 cylinder about 125,000 miles runs great the heater sucks not much heat in cab had changed heater core and thermostat still luke warm air . temp meter is running on low side did feel heat from motor & radiator coolant full no leaks. what should check next Crazy?


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Mar 18, 2009, 4:30 PM

Post #2 of 2 (1483 views)
Re: heater problem Sign In

Hmmm? From cold start up and feel upper radiator hose - aftern thermostat but close to engine end. It should stay quite cold untile thermostat starts to open, then on for a rush of heat toward radiator. If that warms before engine reads a normal and uniform temp then coolant is getting by the thermostat too fast.

New of not, not much should be slipping by and I suspect it is for now - that test would show that.

Sometimes especially if thermostat is mounted vertically they slip their spot while finishing up and allow coolant to pass,

T







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